Business Details
50+ Years
experience
Trusted Roofing Solutions in London
Established in 1946, Lonsdale Metal has built an unparalleled reputation as a specialist manufacturer of high-quality patent glazing systems, rooflights, and glass roofs. With over 70 years of industry expertise, we serve both domestic and commercial clients, delivering durable, weather-tight solutions tailored to diverse architectural needs. Our heritage projects include iconic installations at Buckingham Palace, Windsor Castle, and The British Museum, underscoring our commitment to excellence in conservation and modern design. Our nationwide network of registered installers ensures seamless supply and fit services, supported by comprehensive technical guidance and compliance with the latest building regulations.We prioritise innovation, offering systems with advanced thermal performance, non-fragility, and solar control features, alongside a 10-year guarantee for added peace of mind. From bespoke rooflights for private residences to large-scale commercial projects, our team combines technical precision with a client-centric approach to deliver safe, aesthetically pleasing, and long-lasting glazing solutions.
Services
Patent Glazing
Rooflights
Glass Roofs
Heritage Skylights
EcoGard Roof Vents
Glazing Bars
Safety Glass
Non-Fragile Systems
Custom Rooflights
Aluminium Rooflights
Details
- Year established: 1946
Highlights and features
- We have over 70 years of experience in specialist glazing systems.
- Our nationwide delivery ensures timely access to products across the UK.
- We offer a 10-year guarantee on all manufactured systems.
- Our bespoke rooflights cater to unique architectural requirements.
- We serve prestigious clients including the Royal Family and leading architects.
What people say
Excellent advice
Spectacular achievement
Remained dry and leak-free
Outstanding service
Cost-effective solution
Services
Patent Glazing
Patent glazing involves installing aluminium or steel glazing bars to support glass panels in sloped or vertical applications. Our systems ensure structural integrity, weather-tightness, and compliance with building regulations. Ideal for canopies, conservatories, and large commercial structures, they offer thermal efficiency and low maintenance.
Rooflights
Our fixed, opening, and walk-on rooflights enhance natural daylighting while maintaining insulation and safety standards. Available in bespoke shapes and sizes, they suit domestic extensions and commercial buildings. Systems include non-fragile options for industrial settings and heritage-compatible designs for listed properties.
Heritage Skylights
Designed for historic buildings, these skylights replicate traditional aesthetics while incorporating modern performance features. Used at sites like Windsor Castle, they address UV protection, weather-tightness, and thermal efficiency. Custom profiles ensure compatibility with period architecture and conservation guidelines.
EcoGard Roof Vents
EcoGard provides controlled ventilation for flat or sloped roofs, reducing condensation and improving air quality. Suitable for residential and commercial spaces, these units integrate with glazing systems to enhance energy efficiency. Options include manual and automated opening mechanisms for climate control.
Glazing Bars
Available in traditional and contemporary styles, our glazing bars support single, double, or triple glazing. They feature thermal breaks for insulation and come in self-supporting or rafter-fixed designs. Applications range from domestic conservatories to large-scale projects like train stations and museums.
Questions
Do you deliver products outside the UK mainland?
Yes, we deliver to UK islands and handle global export orders upon request.
How quickly do you respond to technical inquiries?
We aim to respond within one working day during standard business hours.
Can I purchase products directly as a homeowner?
Homeowners can obtain supply-and-fix quotations through our registered dealer network for competitive pricing.
Do you offer bespoke glazing solutions?
Yes, we provide custom-sized and shaped rooflights tailored to specific architectural requirements.
What is the typical installation time for a rooflight?
Installation duration varies by project size; standard EcoGard units take 2-3 hours for single-story roofs.
